7] Because there were no male heirs to inherit from her father, Giampaolo da Cere, Portia received all his lands including the rich duchy of Cere (near Cerveteri), Bassano Romano, and Magliano Romano Pecorareccio.

However, most scientists and physicians who have studied the puzzle of why certain people get the disease while others don't are convinced that heredity-the genes we inherit from our ancestors-is a very important factor.

Caporaso of the National Cancer Institute found a heightened risk of lung cancer in people who inherit from one or both parents a gene that helps the body metabolize certain chemicals in cigarette smoke.

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